Foam spray fire extinguisher

Abstract

The invention discloses a foam spray fire extinguisher, which consists of a temperature probe, a temperature compensation line, a heat exchange box, a heat exchanger and a temperature control module assembled in the heat exchange box, a PLC and a human-computer interface assembled in a fire-fighting control cabinet. Each temperature probe is arranged at the joint of a high-pressure bushing and a main transformer and is connected with the heat exchanger in the heat exchange box by the temperature compensation line. Because the temperature probe of the foam spray fire extinguisher is fixed at the root of the high-pressure bushing on the surface of the main transformer, the foam spray fire extinguisher has high temperature detecting and measuring precision, and can display the surface temperature of the main transformer by a digital mode to be observed conveniently. The foam spray fire extinguisher has the advantages of simple structure, high reliability and convenient use and maintenance, and provides reliable protective measure for the running of the transformer.

Description

technical field [0001] The invention relates to a fire-fighting fire extinguisher, in particular to a special foam spray fire extinguisher for oil-immersed power transformers, fuel-fired boiler rooms, fuel-fired generator rooms, small oil storage tanks, small garages, small repair garages, and small oil depots. Background technique [0002] At present, the fixed fire extinguishing system used by domestic transformers is mainly the water spray fire extinguishing system, which is the earliest fixed fire extinguishing system applied to outdoor large transformer fire protection. The system consists of underground storage tanks, water intake pipes, fire pumps, ring-shaped underground fire main network, water spray control valves, transformer water spray standpipes, horizontal branch pipes, atomizing nozzles, water pump start control and protection devices, etc. In the cold winter, the water in the water tower is easy to freeze and crack the pipeline. Since the frequency conversio...

AI Technical Summary

Problems solved by technology

In the cold winter, the water in the water tower is easy to freeze and crack the pipeline. Since the frequency conversion water pump is always in the state of speed regulation, the impurity in the water will wear the pump greatly. Compared with the frequency conversion water pump in the tap water system, the water pump, pipe network The supporting fire water supply system occupies a large area and is expensive, and the daily maintenance and management are also troublesome

At present, the general control method is to wind the temperature-sensing cable on the main body of the transformer, and the temperature feedback signal of the temperature-sensing cable is sent to the fire alarm controller. If it is not found in time, it will pose a threat to the safety of the main transformer

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